rt2x00: Export rt2x00soc_probe from rt2x00soc

Export rt2x00soc_probe from rt2x00soc as it is used in rt2800pci.

Otherwise loading rt2800pci gives "rt2800pci: Unknown symbol
rt2x00soc_probe".

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2x00soc.c

@@ -112,6 +112,7 @@ exit_free_device:
 
 	return retval;
 }
+EXPORT_SYMBOL_GPL(rt2x00soc_probe);
 
 int rt2x00soc_remove(struct platform_device *pdev)
 {